This blog is moving to blog.r-enthusiasts.com. The new one is powered by wordpress and gets a subdomain of r-enthusiasts.com. See you there

Read more »

I'm trying to make improvements to the R Graph Gallery, I'm looking for suggestions from users of the website. I've started a question on the website's facebook page. Please take a few seconds to vote to existing improvements possibilities...

Read more »

The purpose of Rcpp modules has always been to make it easy to expose C++ functions and classes to R. Up to now, Rcpp modules did not have a way to declare inheritance between C++ classes. This is now fixed in the development version, and t...

Read more »

Rcpp modules just got more flexible (as of revision 3838 of Rcpp, to become 0.9.16 in the future).

modules have allowed exposing C++ classes for some time now, but developpers had to declare custom wrap and as specializations if they wanted their classes to be used as return type or argument type of a C++ function or method....

Read more »

So, let's crawl some data out of facebook using R. Don't get too excited though, this is just a weekend whatif project. Anyway, so for example, I want to download some photos where I'm tagged.

First, we need an access token from facebook. I don't know how to get this programmatically, so let's get one manually, log on to facebook...

Read more »

Here comes yet another sequel of the code optimization problem from the R wiki, still using Rcpp, but with a different strategy this time Essentially, my previous version (15) was using stringstream although we don't really need its functionality ...

Read more »

The Google Open Source Programs Office sponsored me to create the new int64 package that has been released to CRAN a few days ago. The package has been mentionned in an article in the open source blog from Google. The package defines classes i...

Read more »

Tony Breyal woke up an old code optimization problem in this blog post, so I figured it was time for an Rcpp based solution

This solutions moves down Henrik Bengtsson's idea (which was at the basis of attempt 10) down to C++. The idea was to call sprintf less than the other solutions to generate the strings...

Read more »

I played around with reverse dependencies of Rcpp. At the moment, 44 packages depend on Rcpp and the number goes up to 53 when counting recusive reverse dependencies. I've used graphviz for the representation of the directed graph Here is the c...

Read more »

Following last post about partnership with R Bloggers, Tal and I have added a small widget to the gallery main page to present links to recent posts on R Bloggers It uses the wordpress api to grab information about the rss feed generated by R Bl...

Read more »